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Title: | Light-Induced Degradation of Perovskite Solar Cells: The Influence of 4-Tert-Butyl Pyridine and Gold | Authors: | Bastos, Joao P. Paetzold, Ulrich W. Gehlhaar, Robert Qiu, Weiming Cheyns, David Surana, Supriya Spampinato, Valentina AERNOUTS, Tom POORTMANS, Jef |
Issue Date: | 2018 | Publisher: | WILEY-V C H VERLAG GMBH | Source: | ADVANCED ENERGY MATERIALS, 8(23) (Art N° 1800554) | Abstract: | Stability is one of the key challenges for industrial scale commercialization of perovskite solar cells. In this work, a degradation mechanism that depends on materials and bias conditions of the device during light-soaking is proposed. The observed degradation is linked to the additive 4-tert-butyl pyridine (tBP), crucial to the hole transport layer of most perovskite solar cells, and gold. This conclusion is reached through the statistical analysis of multiple compositional profiles of light-soaked and nonlight-soaked devices and by selective replacement of material layers of the device. Moreover, the rate of the light-induced degradation is enhanced by operation at forward bias, which is required for power generation. Thus, this work stresses the need for the development of transport layers that do not require tBP, and to replace gold to produce high-performing devices that are also stable under operating conditions. | Notes: | [Bastos, Joao P.; Paetzold, Ulrich W.; Gehlhaar, Robert; Qiu, Weiming; Cheyns, David; Surana, Supriya; Spampinato, Valentina; Aernouts, Tom; Poortmans, Jef] IMEC, Kapeldreef 75, B-3001 Heverlee, Belgium. [Bastos, Joao P.; Poortmans, Jef] Katholieke Univ Leuven, Dept Elect Engn, Kasteelpk Arenberg 10, B-3001 Leuven, Belgium. [Paetzold, Ulrich W.] Karlsruhe Inst Technol, Inst Microstruct Technol, Hermann von Helmholtz Pl 1, D-76344 Karlsruhe, Germany. [Surana, Supriya] Katholieke Univ Leuven, Dept Phys, Celestijnenlaan 200d, B-3001 Leuven, Belgium. [Poortmans, Jef] Hasselt Univ, Inst Mat Res, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. [Poortmans, Jef] Hasselt Univ, IMEC Associated Lab IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. | Keywords: | light; perovskite solar cells; stability;light; perovskite solar cells; stability | Document URI: | http://hdl.handle.net/1942/27699 | ISSN: | 1614-6832 | e-ISSN: | 1614-6840 | DOI: | 10.1002/aenm.201800554 | ISI #: | 000441741900007 | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2019 |
Appears in Collections: | Research publications |
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